Sunday, August 30, 2020
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
SUNDAY, AUGUST 30, 2020
ALL TIMES ARE IN EASTERN STANDARD TIME
FALL-LIKE WITH GREAT VISIBILITY AND A
COOL WESTERLY BREEZE….
Today was a great example of an early fall day. It
consisted of high visibility, cool temperatures, and
a bit of wind. Visibility was 80 miles all day, and
wind was constant from the west at around 20 mph.
The max gust encountered since 7 A.M. is 35 mph, seen
around 9 A.M. Skies were almost clear, becoming partly
cloudy by the 10 A.M. observation.
The observatory is very busy with rooftop tours, which
is $3 per adult and less for children. We’re open until
4 P.M. today (as with all weekend days), and the view is
definitely worth the hike. Drop-in tours starting at
10 A.M. EDT are also allowed on weekdays. This is the
time of year to visit the observatory, since the fall
weather yields the best visibility, as well as the best
hiking weather.
The high so far today is 75F, which is 2 degrees below
the daily normal maximum of 77F. The low since midnight
is 61F, a degree above the average of 60F.
Today’s Observations:
7 A.M.
Weather: Fog
Temperature: 63F; Dew Point: 56F; Relative Humidity: 77%
Wind: WSW at 10 kts
Sea-level pressure: 29.59 ins. Hg: rising steadily
Visibility: 80 miles
6-hr Max temp: 67F
6-hr Min temp: 61F
24-hr Precip: 0.06 ins.
BHO SA 1155 CLR 80 020/63/56/2410/959/ FEW CU/CI ALQDS/
8/101 70006 53028 10067 20061
10 A.M.
Weather: Broken cumulus and cirrus
Temperature: 71F; Dew Point: 55F; Relative Humidity: 57%
Wind: W at 13G29 kts, peak of 35 mph at 9:10 A.M.
Sea-level pressure: 29.65 ins. Hg: rising steadily
Visibility: 80 miles
3-hr Precip: 0.00 ins.
BHO SA 1455 45 BKN 250 BKN 80 038/71/55/2813G29/965/ PK WND
2730/10/ 8/101 51018
1 P.M.
Weather: Scattered cumulus, broken cirrus
Temperature: 74F; Dew Point: 51F; Relative Humidity: 43%
Wind: NW at 13G22 kts
Sea-level pressure: 29.71 ins. Hg: rising steadily
Visibility: 80 miles
6-hr Max temp: 75F
6-hr Min temp: 63F
6-hr Precip: 0.00 ins.
BHO SA 1755 45 SCT 250 BKN 80 059/74/51/3113G22/971/ 8/101
53021 10075 20063
SUMMARY FOR SATURDAY, AUGUST 29, 2020
TEMPERATURE (DEGREES F)
MAX…..74 NORMAL…..77
MIN…..65 NORMAL…..60
MEAN….70 NORMAL…..69
DEPARTURE FROM 30-YEAR NORMAL…………….. +1
TOTAL DEPARTURE FOR THE MONTH……………..+100 [+3.2 DEGREES/DAY]
COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY………………5 DEPARTURE……+1
TOTAL COOLING UNITS FOR THE MONTH…………….269 DEPARTURE…..+91
TOTAL COOLING UNITS FOR THE SEASON……………756 DEPARTURE….+227
TOTAL COOLING UNITS LAST SEASON TO DATE……….610 DEPARTURE….+146
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………..23 W AT 11:56 P.M.
AERO…………………….32 W AT 11:43 P.M.
ASOS…………………….33 W AT 11:58 P.M.
DAVIS……………………33 W AT 11:57 P.M.
RMY N/A MERLIN N/A
FASTEST MILE FOR YESTERDAY………………….25 W AT 11:58 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………….23 W AT 11:58 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE………………25 W AT 11:58 P.M.
AVERAGE WIND SPEED AND DIRECTION…………..12.5 S
ASOS…………………..12.8
DAVIS………………….12.6 WNW [290 deg.]
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.06 DEPARTURE……-0.05
ASOS…………..0.06
TOTAL PRECIPITATION FOR THE MONTH……….3.74 DEPARTURE……-0.07
ASOS…………..3.77
TOTAL PRECIPITATION FOR THE YEAR……….32.81 DEPARTURE……-1.99
ASOS………….33.58
PRELIMINARY CLIMATE SUMMARY FOR AUGUST CALENDAR DAY DATA
DATE: MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN.)/SUN(%)/PEAK GUST/AERO/RMY GUST
AERO: Aerovane wind recording system gust
RMY: R.M. Young wind gust recording system
TSTM: Thunderstorm day (thunder heard some time during day)
….: Data not yet available, records not finalized
M: Missing data
08/01 87/66/77/+5/0.00/…/.. 18 S AERO 21 S RMY 19
08/02 85/69/77/+5/0.02/…/.. 36 S AERO 37 S RMY 38
08/03 91/75/83/+11/0.00/715/83 36 WSW AERO 38 SW RMY 36
08/04 83/71/77/5/0.21/094/11 67 SSE AERO 71 S RMY 70
08/05 90/68/79/+7/0.00/668/78 28 SW AERO 30 SW RMY 29
08/06 84/65/75/3/0.00/701/82 20 W AERO 17 W RMY 19
08/07 79/65/72/0/T/136/16 16 NE AERO 16 NE RMY N/A
08/08 83/64/74/+2/0.00/612/72 20 S AERO 20 S RMY 19
08/09 90/65/78/+6/0.00/661/78 26 SSW AERO 26 SSW RMY 26
08/10 94/69/82/+11/0.00/727/86 22 W AERO 20 W RMY 20
08/11 92/72/82/+11/0.00/…/.. 31 SSW AERO 35 SSW RMY 31 TSTM
08/12 93/74/84/+13/0.00/…/.. 22 SSW AERO 22 SW RMY 19
08/13 88/71/80/+9/0.00/…/.. 18 ENE AERO 18 NE RMY 18
08/14 82/67/75/+4/0.00/…/.. 23 ENE AERO 23 ENE RMY N/A
08/15 67/62/65/-6/T/…/.. 33 NNE AERO 32 NNE RMY N/A
08/16 69/62/66/-5/…./…/.. 26 ENE AERO 28 ENE RMY 26
08/17 73/59/66/-5/…./…/.. 25 NE AERO 24 NE RMY N/A
08/18 84/63/74/+3/…./…/.. 23 W AERO 23 W RMY 24
08/19 81/59/70/0/0.03/…/.. 26 W AERO 28 W RMY 27
08/20 80/56/68/-2/0.00/…/.. 22 W AERO 21 W RMY 22
08/21 88/61/75/+5/0.00/…/.. 28 SW AERO 26 SW RMY 28
08/22 85/66/76/+6/0.26/…/.. 18 NNE AERO 16 S RMY 16
08/23 89/63/76/+6/2.21/…/.. 60 WNW AERO 53 WNW RMY 58 TSTM HAIL
08/24 87/67/77/+7/0.00/…/.. 18 S AERO 18 S RMY 19
08/25 86/65/76/+7/0.01/…/.. 35 NNW AERO 37 NNW RMY 35
08/26 74/56/65/-4/0.00/…/.. 29 NW AERO 32 NW RMY N/A
08/27 68/57/63/-6/0.33/…/.. 18 SSE AERO 20 SSE RMY 20
08/28 80/59/70/+1/0.00/…/.. 20 W AERO 20 W RMY N/A
08/29 74/65/70/+1/0.06/…/.. 32 W AERO 32 W RMY N/A
08/30 The low since midnight is 61F, the daily normal low is 60F
DAILY RECORDS FOR AUGUST 2020
8/23/20: DAILY RECORD HIGH MAXIMUM TEMPERATURE OF 89F,
BREAKS PREVIOUS RECORD of 88F SET IN 1918, 1947, 1949, 1996
8/23/20: DAILY RECORD PRECIPITATION OF 2.21 INS,
BREAKS PREVIOUS RECORD OF 2.09 INS SET IN 2010
8/23/20: DAILY RECORD PEAK WIND GUST OF 60 MPH,
TIES PREVIOUS RECORD OF 60 MPH SET IN 1940
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
RECORDS FOR AUGUST 30
HIGH 94F IN 1953
LOW 39F IN 1965
PRECIP 2.75 INCHES IN 1936
PEAK GUST 43 MPH NW IN 1965
RECORDS FOR AUGUST 31
HIGH 94F IN 1953
LOW 42F IN 1976
PRECIP 2.46 INCHES IN 1954
PEAK GUST 125 MPH SE IN 1954 [CAROL – RECORD FOR MONTH]
TODAY’S REPORT PREPARED BY: Benjamin Turner
